1253803 has 2 divisors, whose sum is σ = 1253804. Its totient is φ = 1253802.

The previous prime is 1253783. The next prime is 1253831. The reversal of 1253803 is 3083521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1259803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626901 + 626902.

It is an arithmetic number, because the mean of its divisors is an integer number (626902).

2^1253803 is an apocalyptic number.

1253803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253803 is an equidigital number, since it uses as much as digits as its factorization.

1253803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1253803 is about 1119.7334504247. The cubic root of 1253803 is about 107.8308681020.

The spelling of 1253803 in words is "one million, two hundred fifty-three thousand, eight hundred three".